Dynamic magnetic information storage or retrieval – Head – Core
Reexamination Certificate
2009-02-09
2010-02-02
Heinz, A. J. (Department: 2627)
Dynamic magnetic information storage or retrieval
Head
Core
C360S123120, C360S125190
Reexamination Certificate
active
07656613
ABSTRACT:
A magnetic head comprises a pole layer, a shield layer, a gap layer disposed between the pole layer and the shield layer, and a coil. The shield layer incorporates: a first layer disposed on the gap layer; a second layer disposed on the first layer; and a third layer disposed on the second layer. The first layer has an end face located in a medium facing surface. An end face of each of the second and third layers closer to the medium facing surface is located at a distance from the medium facing surface. A first nonmagnetic layer is disposed around the first layer. A second nonmagnetic layer is disposed between the medium facing surface and the end face of the second layer closer to the medium facing surface.
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Araki Hironori
Itoh Hiroyuki
Li Dong-Hong
Sasaki Yoshitaka
Tanemura Shigeki
Headway Technologies Inc.
Heinz A. J.
Oliff & Berridg,e PLC
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